BIG KAISER announces the introduction of the world's reportedly smallest hydraulic chuck for HSK-E25 machine spindles, thus completing its extensive range of BIG KAISER Super Slim hydraulic chucks. The Super Slim type of hydraulic chucks (HDC) are suitable toolholders for precision finishing processes in confined areas with drills, reamers, ball mills, endmills, diamond reamers and grinding tools. Cutting tools with shank diameters of 3mm or 4mm can be clamped directly and are suitable for high-speed micromachining applications in the automotive, aerospace, medical, die and electronics industries.

BIG KAISER designed the Super Slim HDC to require only a single wrench for clamping and unclamping. These chucks can clamp ultrasmall endmills and drills directly, without needing a reduction sleeve. The external body diameter of the chuck nose is a mere 0.551" (14mm), and a gauge length of 1.575" (40 mm) making it compact and precise. Each tool is precision balanced for speeds up to 60,000rpm and runout accuracy of less than 3 microns (.00012") at 5xd.

"Our HSK-E25 tool holder lineup now includes BIG KAISER's high precision, low runout, hydraulic chucks," says Jack Burley, vice president of sales and engineering at BIG KAISER. "These ultraprecise hydraulic chucks, with their extremely slim design, are perfectly suited for high-precision finish milling work on ultrahigh speed spindles on machines with small work envelopes."

The Super Slim HDCs for HSK-E25 machine spindles are available from stock; they are also available for the HSK-E 32 and HSK-E 40 spindle types.